I run a stock pump and have almost 80 psi cold at idle and it carrys 45-50 idle and 80 down track hot all day long.

70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4